Electric vaporizer



Sept. 27, 1938. l.. JAROLL ELEGTRIC vAPoRIzER Filed Feb. 16, 1937Patented Sept. 27, 1938 UNITED STATES PATENT GFFICE 2 Claims.

This invention relates to electric vaporizers and has for its principalobjects the provision of a compact, sturdy, attractive and economicalconstruction which is highly efficient, fool-proof `and safe to handleand use. Other objects of the invention will hereinafter appear.

In the accompanying drawing in which I have illustrated a preferredembodiment of my in- Vention t Figure 1 is a vertical section partly inelevaion;

Fig. 2 is a detail elevation of the central tube in which the heatingelement is mounted, isolated; and

l5 F 3 is a section taken along the line 3 3 of Referring to the drawingand the construction shown therein, the reference numeral I designates atray, preferably of metal, the same being provided with a central dome 2and a cover 3, the latter having a central hollow boss 4 projectingupwardly therefrom. The tray is supported on a plurality of knobs orfeet 5, preferably three in number and spaced approximately 120 apartalong the circumference of said bottom. A handle 6 is riveted orotherwise secured to said tray. A pipe section I is mounted in said domeand an annular support 8 is adjustably supported on a nut 9 that isthreaded on said pipe section. A pair of rods I0 are rigidly mounted insaid support 8, the same preferably fitted into apertures formed in saidsupport and brazed or soldered to such support. A curvilinear or crookedrod II, also similarly secured to said support 8, is rigidly secured atits upper end to 35 a casing I2, being preferably brazed or solderedthereto. At the bottom of said casing, an indent or stop member I2 isstruck-up which functions as hereinafter described. A nut I3,

which is threaded on the lower end -of the pipe 40 1, serves to retainthe tray, its cover and said pipe 1 in the assembled position shown inFig. 1. The rodsv I IJ serve as a support for a hollow, bellshapeddelector or heat-radiating hood I5, the top I6 of which is provided withan aperture I1 that is of greater diameter than the outside diameter ofsaid casing I2, said hood being adjustably secured to said rod bypositioning and retaining nuts, as shown.

A cup-shaped receptacle 20, having a central sleeve 2|, brazed orotherwise secured thereto, is slidably tted on said casing I2 and a knob22, which is threaded into the upper end of said sleeve, serves toadjustably support the same on 55 said casing I2. Said receptacle has aflared top flange 23 which serves to dissipate heat from said receptacleby radiation. A resistance heating element 25 is mounted in the casingI2, the same being introduced into the upper end of said casing prior tothe mounting of said receptacle on said casing. Said heating elementabuts at its lower end against the projection or stop I2 so that whenfully inserted in said casing, it will assume the position shown in Fig.1.

A second bell-shaped deflector 24 is brazed or 10 otherwise rigidlysecured to the upper end of the receptacle 20, said deflector being ofsufficient length to partially envelop or overlap the upper end of thelower deiiector I5.

Said heating element preferably comprises a l5 resistance coil embeddedin a heat-refractory, insulation medium, of a type in common use, thesame being permanently connected to leads 2G of a lamp cord 2l and thelatter being clamped to the bottom of the tray by a clip 28 so as to 20relieve the leads from tension. A plug 29 that is adapted to be insertedinto a socket of an electrical fixture of an ordinary house lightingcircuit is secured to the outer ends of said leads.

In lieu of a heating element such as shown, 25 any other suitable typeof resistance heating element, such as a cigar type of heating elementmounted in a suitable electric socket positioned adjacent the bottom ofthe tube I2 may be substituted therefor.

As shown, the top apertures in the dome 2 and the hollow boss 4 are ofsomewhat greater diameter than the pipe 'l and likewise the diameter ofthe aperture II is, as stated, of greater diameter than the externaldiameter of the casing I2 so as to admit of the ready insertion of saidpipe and said casing through the respective apertures during theassembly of the device as wells as to afford an air gap which impedesthe conduction of heat from the interior of the vaporizer to the outersurfaces thereof. 40

My improved vaporizer, especially if employed with a thermostatic orlike time switch, is ideally adapted for use in homes, institutions,office buildings, for medication, disinfecting or deodorizing andfumigating purposes and especially for effectively disseminatingperfumes, incense and the like throughout the atmosphere of a room orother chamber.

Due to the disposition of the heat-radiating deflectors with respect tothe heating element and the liquid receptacle, it is possible toeifectively utilize the heat from the heating element without danger ofthe vaporizer becoming too hot to handle when shifting the position ofthe u vaporizer to a different location in the same or a different roomor to result in the vaporizer becoming a fire hazard even should thesame not be equipped with a thermostatic cut-off switch or time switch.

To operate the Vaporizer, when assembled, liquid, such as perfume,disinfectant or the like is introduced into the well or receptacle 20and the plug 29 is inserted into a socket of an electric circuit. If nothermostatic or time switch is employed lfor interrupting the circuit,it is desirable to periodically disconnect the plug from the circuitafter the liquid commences to boil vigorously, say after about oneminute, thereby the residual heat stored in the heating element willcontinue to evaporate the liquid for several additional minuteswhereupon the plug is again connected to the circuit.

If a thermostatic switch is employed to control the ilow of currentthrough the heating element, it is desirable that the same be sodesigned or set that the circuit will be automatically closed for arelatively short period of time, say one minute and then will beautomatically broken and remain interrupted for a relatively long periodof time say ve to seven minutes and thereby, owing to the heatdistributing or heat-radiating features of the vaporizer, all danger iseliminated, even if all the liquid in the receptacle has evaporated, ofthe legs or any portion of the shell becoming so hot as to Scorch orignite a support or an object with which the Vaporizer contacts; andlikewise the handle will never become heated suiciently to burn thehands of the user should it be desired to shift the vaporizer to adifferent location.

Various changes from the preferred construction herein illustrated maybe made without departing from the spirit o1" my invention as embracedwithin the scope of the appended claims.

'Having thus described my invention, what I claim and desire to obtainby United States Letters Patent isz- 1. In an electric vaporizer, thecombination comprising a base member, a support projecting upwardlytherefrom and secured thereto, a resistance heating element carried bysaid support, a receptacle having a central sleeve adapted to receive atleast a portion of said heating element and having a chamber for liquidsurrounding said sleeve, a plurality of ilared heat-radiating shieldsdisposed vertically on said vaporizer and each shield, other than thebottom shield, overlapping a portion of the shield immediately below it,circuit terminals adapted to connect said heating element with a sourceof electricity and means for supporting said terminals so as to preventan undue thrust on the portions of said terminals immediately adjacentthe heating element or upon the heating element during the manipulationof plugging into or disconnecting the other end of said leads from asource of electricity.

2. In an electric vaporizer, the combination comprising a tray, thecentral portion of which is elevated substantially above the level ofthe adjacent bottom of the tray and said elevated portion having acentral aperture, a pipe mounted in said central aperture and projectingupwardly therefrom, a supporting shell secured to said tray and having ahollow upwardly projecting central boss, a support threaded on the upperend of said pipe, said support having a plurality of upwardly projectingsupporting arms, a heatradiating deflector enveloping the upper end ofsaid boss andv secured to certain of said arms, said deector having acentral aperture in the top thereof, a tubular casing of smallerexternal diameter than the diameter of said central aperture in saiddeector, said casing being secured to another of said arms andprojecting upwardly through said aperture, a liquid receptacle hav- 1.

ing a central chamber of an internal diameter to snugly receive saidcasing, means for retaining said receptacle in a predetermined adjustedposition on said casing, a second deector element projecting from thetop of said receptacle and an intermediate deflector surrounding theside of said receptacle and also overlapping the top of the rstmentioned deflector, a resistance heating element mounted in saidcasing, means for supporting the same in said casing, a pair ofinsulated metallic leads connected to said heating element, a commonprotective covering enveloping both of said leads, means for connectingsaid leads to a source of electricity so as to permit of current beingconducted through said heating element, a clip member adapted to clampsaid leads and relieve a portion of said leads adjacent said heatingelement of strain during the manipulation of said leads while pluggingthe same into or disconnecting the same from a source of electricity.

LOUIS JAROLL.

